Dec 9, 2020

Uber sells air taxi business Elevate to Joby Aviation

Joby Aviation
Uber
Elevate
William Smith
2 min
Uber has announced the sale of its air taxi business to electric aircraft developer Joby Aviation
Uber has announced the sale of its air taxi business to electric aircraft developer Joby Aviation...

Uber has announced the sale of its air taxi business to electric aircraft developer Joby Aviation.

Uber Elevate was only established in 2016, with the hope of building a market for ridesharing via the skies in cities with eventual transportation options ranging from helicopters to electric VTOL aircraft to pilotless drones.

While the purchase price was not disclosed, Uber has invested a further $75mn into Joby, adding to a previous $50mn it has put into the company. Joby has raised $721mn since its 2019 foundation. The deal was expected to close in Q1 2021

In a press release, JoeBen Bevirt, founder and CEO, Joby Aviation, said: “The team at Uber Elevate has not only played an important role in our industry, they have also developed a remarkable set of software tools that build on more than a decade of experience enabling on-demand mobility.

"These tools and new team members will be invaluable to us as we accelerate our plans for commercial launch."

The deal does not represent a total retreat from the urban air mobility market, with both companies promising to integrate each others’ services into their respective apps.

Uber’s CEO Dara Khosrowshahi said: "Advanced air mobility has the potential to be exponentially positive for the environment and future generations. This deal allows us to deepen our partnership with Joby, the clear leader in this field, to accelerate the path to market for these technologies. We're excited for their transformational mobility solution to become available to the millions of customers who rely on our platform."

The move comes just after the sale of its self-driving vehicle business to autonomous vehicle firm Aurora, in another effort to divest itself of unprofitable parts of its business and focus on its bread-and-butter ride-hailing and food delivery platforms. Taken together, Uber’s technology programmes lost $104mn in the last quarter, with the company overall reporting a loss of $625mn.

(Image: Uber)

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Jun 11, 2021

Google AI Designs Next-Gen Chips In Under 6 Hours

Google
AI
Manufacturing
semiconductor
3 min
Google AI’s deep reinforcement learning algorithms can optimise chip floor plans exponentially faster than their human counterparts

In a Google-Nature paper published on Wednesday, the company announced that AI will be able to design chips in less than six hours. Humans currently take months to design and layout the intricate chip wiring. Although the tech giant has been working in silence on the technology for years, this is the first time that AI-optimised chips have hit the mainstream—and that the company will sell the result as a commercial product. 

 

“Our method has been used in production to design the next generation of Google TPU (tensor processing unit chips)”, the paper’s authors, Azalea Mirhoseini and Anna Goldie wrote. The TPU v4 chips are the fastest Google system ever launched. “If you’re trying to train a large AI/ML system, and you’re using Google’s TensorFlow, this will be a big deal”, said Jack Gold, President and Principal Analyst at J.Gold Associates

 

Training the Algorithm 

In a process called reinforcement learning, Google engineers used a set of 10,000 chip floor plans to train the AI. Each example chip was assigned a score of sorts based on its efficiency and power usage, which the algorithm then used to distinguish between “good” and “bad” layouts. The more layouts it examines, the better it can generate versions of its own. 

 

Designing floor plans, or the optimal layouts for a chip’s sub-systems, takes intense human effort. Yet floorplanning is similar to an elaborate game. It has rules, patterns, and logic. In fact, just like chess or Go, it’s the ideal task for machine learning. Machines, after all, don’t follow the same constraints or in-built conditions that humans do; they follow logic, not preconception of what a chip should look like. And this has allowed AI to optimise the latest chips in a way we never could. 

 

As a result, AI-generated layouts look quite different to what a human would design. Instead of being neat and ordered, they look slightly more haphazard. Blurred photos of the carefully guarded chip designs show a slightly more chaotic wiring layout—but no one is questioning its efficiency. In fact, Google is starting to evaluate how it could use AI in architecture exploration and other cognitively intense tasks. 

 

Major Implications for the Semiconductor Sector 

Part of what’s impressive about Google’s breakthrough is that it could throw Moore’s Law, the axion that the number of transistors on a chip doubles every five years, out the window. The physical difficulty of squeezing more CPUs, GPUs, and memory on tiny silicon die will still exist, but AI optimisation may help speed up chip performance.

 

Any chance that AI can help speed up current chip production is welcome news. Though the U.S. Senate recently passed a US$52bn bill to supercharge domestic semiconductor supply chains, its largest tech firms remain far behind. According to Holger Mueller, principal analyst at Constellation Research, “the faster and cheaper AI will win in business and government, including with the military”. 

 

All in all, AI chip optimisation could allow Google to pull ahead of its competitors such as AWS and Microsoft. And if we can speed up workflows, design better chips, and use humans to solve more complex, fluid, wicked problems, that’s a win—for the tech world and for society. 

 

 

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